DE647705C - Process for the recovery of solvents from the exhaust air of spray painting facilities - Google Patents

Process for the recovery of solvents from the exhaust air of spray painting facilities

Info

Publication number
DE647705C
DE647705C DEC51285D DEC0051285D DE647705C DE 647705 C DE647705 C DE 647705C DE C51285 D DEC51285 D DE C51285D DE C0051285 D DEC0051285 D DE C0051285D DE 647705 C DE647705 C DE 647705C
Authority
DE
Germany
Prior art keywords
exhaust air
filter
spray painting
wool
recovery
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
DEC51285D
Other languages
German (de)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CARBO NORIT UNION VERWALTUNGSG
Original Assignee
CARBO NORIT UNION VERWALTUNGSG
Publication date
Priority to DEC51285D priority Critical patent/DE647705C/en
Application granted granted Critical
Publication of DE647705C publication Critical patent/DE647705C/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/02Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
    • B01D53/04Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D47/00Separating dispersed particles from gases, air or vapours by liquid as separating agent
    • B01D47/14Packed scrubbers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2253/00Adsorbents used in seperation treatment of gases and vapours
    • B01D2253/10Inorganic adsorbents
    • B01D2253/102Carbon
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2257/00Components to be removed
    • B01D2257/70Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
    • B01D2257/708Volatile organic compounds V.O.C.'s
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2258/00Sources of waste gases
    • B01D2258/02Other waste gases
    • B01D2258/0258Other waste gases from painting equipments or paint drying installations

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Treating Waste Gases (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)

Description

Verfahren zur Rückgewinnung von Lösungsmitteln aus der Abluft von SpritzlaWiereinrichtungen Die Rückgewinnung der Lösungsmittel aus der Abluft von Spritzlackiereinrichtungen mit Hilfe von festen Adsorptionssboffen, z. 3. aktiver Kohle, macht es notwendig, daß vor Eintritt der Abluft in die Adsorptionsvorrichtung in ihr enthaltene Schwebestoffe, wie z. B. Farbstoffe in Tropfen- oder Nebelform, nach Möglichkeit vollständig entfernt werden.Process for the recovery of solvents from exhaust air from Spray systems The recovery of solvents from exhaust air from Spray painting equipment with the help of solid adsorption agents, e.g. 3. more active Coal, makes it necessary before the exhaust air enters the adsorption device suspended matter contained in it, such as. B. dyes in droplet or mist form, be removed completely if possible.

Eine für die Zwecke einer Wiedergewinnungsanlage genügende Entfernung dieser Stoffe mit bekannten Filtermitteln, wie Ringkörpern, Metallspänen, Holzwolle o. dgl., ist nicht erreichbar. Diese Filterstoffe reichen allenfalls aus, wenn man mit der Abscheidung gröberer Bestandteile unter Hinnahme schlechterer Ergebnisse in der Rückglewinnungsanlage zufrieden ist. Mit feineren Filterstoffen, wie Cel]ulose oder Watte, kann man nvar eine bessere Reinigungswirkung erzielen. Man muß sie zu diesem Zweck jedoch sehr dicht packen, woraus sich der Nachteil ergibt, daß man sie mit Rücksicht auf den infolge der dichten Packung sehr hohen Filterwiderstand nur in dünner Schicht anwenden kann, die sehr schnell erschöpft ist. Infolgedessen müssen diese Filter oft ausgewechselt werden. A sufficient distance for the purposes of a recovery plant these substances with known filter media, such as ring bodies, metal shavings, wood wool or the like, cannot be reached. These filter materials are sufficient if you have with the separation of coarser constituents while accepting poorer results is satisfied in the reclamation facility. With finer filter materials, such as Cel] ulose or cotton wool, you can achieve a better cleaning effect. You have to However, for this purpose pack very tightly, which has the disadvantage that one taking into account the very high filter resistance due to the dense packing can only be applied in a thin layer, which is exhausted very quickly. Consequently these filters have to be changed often.

Die Erfindung besteht nun darin, die Abluft von Spritzlackiereinrichtungen vor Eintritt in die Adsorptionsanlage einer Behandlung mit Torfwolle zu unterwerfen. Es wurde gefunden, daß Torfwolle im Gegensatz zu anderen Filtermaterialien eine Feinreinigung auch ermöglicht, ohne daß eine dichte Pakkung erforderlich ist. Es besteht darum auch die Möglichkeit, die Torfwolle in höheren Schichten anzuwenden, ohne daß dies an zu hohen Filtenviderständen scheitert. Die weitere Folge ist, daß Torfwollefilter unter den gleichen Verhältnissen ihre Reinigungswirkung wesentlich länger behalten als die bisher üblichen, aus anderen Filtermaterialien bestehenden Filter. Dies erklärt sich daraus, daß Spritzlackierabluft neben fein verteilten suspendierten Teilchen auch meist leine beträchtliche Menge gröberer Teile enthält, die die Filter an der Lufteintrittsstelle bis zu einer bestimmten Tiefe nerhältnismäßig schnell verschmutzen, was zur Folge hat, daß den bekannten Filtern von geringer Schichthöhe nach Durchsatz einer gewissen Luftmenge nur noch eine geringe Reserve für die Reinigung weiterer Luftmengen bleibt. The invention now consists in the exhaust air from spray painting equipment to be subjected to a treatment with peat wool before entering the adsorption plant. It has been found that, unlike other filter materials, peat wool has a Fine cleaning is also possible without the need for a tight packing. It there is therefore also the possibility of using the peat wool in higher layers, without this failing due to excessive filter resistances. The further consequence is that Under the same conditions, peat wool filters have a significant cleaning effect Retain longer than the previously common ones made of other filter materials Filter. This is explained by the fact that spray painting exhaust air is also finely distributed suspended particles also usually contains a considerable amount of coarser particles, the filters at the air inlet point up to a certain depth nerproportionally pollute quickly, which has the consequence that the known filters of less Layer height after throughput of a certain amount of air only a small reserve for cleaning more air.

Auch bei einem Torfwollefilter gemäß der Erfindung tritt nach Durchsatz der gleichen Menge Luft eine Verschmutzung des Filters an der Eintrittsstelle bis zu einer gewissen, den bekannten Filtern entsprechenden Tiefe ein. Der verschmutzte Teil ist aber, da das Filter ohne Erhöhung des Luftwiderstandes um ein Mehrfaches höher gepackt werden kann, im Verhältnis zur verbleibenden Reserve nEur gering.Even with a peat wool filter according to the invention, throughput occurs the same amount of air pollutes the filter at the point of entry up to a certain depth corresponding to the known filters. The dirty one Part is, however, because the filter without increasing the air resistance many times over can be packed higher, only small in relation to the remaining reserve.

In der Zeichnung ist die Verbindung einer Spritzvorrichtung mit einer Adsorptionsvorrichtung, zwischen die ein Torfwollefilter gemäß der Erfindung geschaltet ist, beispielsweise wiedergegeben. In, der Zeichnung stellt I die Spritzvorrichtung dar, aus der die Abluft durch ein Ventil 2 abgesaugt und zur Adsorptionsanlage 3 geführt wird, welche beispielsweise mit aktiver Kohle beschickt ist. In the drawing is the connection of a spray device with a Adsorption device between which a peat wool filter according to the invention is connected is reproduced, for example. In, the drawing I represents the spray device represents, from which the exhaust air is sucked through a valve 2 and to the adsorption system 3 is performed, which is charged, for example, with active carbon.

4 ist ein Grobfilter, dessen Filterschicht aus Holzwolle, Metallspänen 0. dgl. besteht und das zur Zurückhaltung grober Schwebestoffe dient. Das Torfwollefilter ist mit 5 bezeichnet.4 is a coarse filter, the filter layer of which is made of wood wool, metal shavings 0. Like. Is and serves to hold back coarse suspended matter. The peat wool filter is denoted by 5.

Claims (2)

PATENTANSPRÜCHE : I. Verfahren zur Rückgewinnung von Lösungsmitteln aus der Abluft von Spritzlackiereinrichtungen mit Hilfe fester Adsorptionsstoffe, insbesondere aktiver Kohle, dadurch gekennzeichnet, daß die Abluft vor Eintritt in die Adsorptionsvorrichtung durch ein Filter aus Torfwolle hindurchgeführt wird. PATENT CLAIMS: I. Solvent recovery methods from the exhaust air from spray painting facilities with the help of solid adsorbents, in particular active coal, characterized in that the exhaust air before entry is passed into the adsorption device through a filter made of peat wool. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß dem Torfwollefilter ein weiteres mit Prallplatten, Füllkörpern, Spänen 0. dgl. beschicktes Filter vorgeschaltet wird. 2. The method according to claim 1, characterized in that the peat wool filter a further filter loaded with baffle plates, fillers, chips, etc. is connected upstream will.
DEC51285D Process for the recovery of solvents from the exhaust air of spray painting facilities Expired DE647705C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEC51285D DE647705C (en) Process for the recovery of solvents from the exhaust air of spray painting facilities

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEC51285D DE647705C (en) Process for the recovery of solvents from the exhaust air of spray painting facilities

Publications (1)

Publication Number Publication Date
DE647705C true DE647705C (en) 1937-07-10

Family

ID=7027370

Family Applications (1)

Application Number Title Priority Date Filing Date
DEC51285D Expired DE647705C (en) Process for the recovery of solvents from the exhaust air of spray painting facilities

Country Status (1)

Country Link
DE (1) DE647705C (en)

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